Why Is My Go Module Importing an Outdated Package Version?

Module System Importing Old Package Version

When incorporating a new dependency via Go modules, you may encounter instances where an outdated version of the package is retrieved. This can be observed when using the github.com/docker/docker/client package. Although the package functions seamlessly external to the project, upon executing go mod vendor, the module system fetches version v1.13.1, which lacks certain methods crucial to your code. However, go modules identifies this version as the "latest" release.

Solution: Enforce Specific Version Input

To ensure that go mod utilizes the actual latest version of the package, you can explicitly specify the desired version. The Go Wiki's guidance on modules provides insights on this approach:

Specific Version Selection:

• Use the command go get [email protected] to acquire a specific version.
• Input go get foo@master to fetch the latest commit on the master branch.
• Employ go get foo@e3702bed2 to target a precise commit.
• Alternatively, modify the go.mod file directly.

Example for Master Branch Latest Commit:

If you seek the latest commit on the master branch, execute the following command:

go get github.com/docker/docker/client@master

This action directs go mod to retrieve the most current version of the package, ensuring that all necessary methods are available in your project.

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